x402basequality 0.35

Check XRP wallet balances via a pay-per-call x402 endpoint on Base (USDC).

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wallet/XRP/balance

What it does

This endpoint at lowpaymentfee.com returns XRP wallet balance data, accessed through the x402 payment protocol. Each call costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The caller includes an X-PAYMENT header with a signed USDC payment, and the server returns the balance information as JSON.

The endpoint is part of a broader suite of pay-per-request APIs offered by lowpaymentfee.com spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints on the platform share the same $0.02/request pricing model settled in USDC (contract 0x8335…2913) on Base. The x402 challenge was successfully captured, confirming the endpoint is live and accepting payments to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.

Documentation is extremely sparse — the /docs, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The exact request body format and response structure must be discovered experimentally.

Capabilities

xrp-wallet-balancex402-paymentusdc-base-settlementpay-per-requestno-api-keycrypto-balance-lookup

Use cases

  • —Querying XRP wallet balances programmatically without API key management
  • —Integrating XRP balance checks into autonomous agent workflows that can pay per call
  • —Building portfolio trackers or dashboards that need on-demand XRP balance data

Fit

Best for

  • —Agents or bots that need keyless, on-demand XRP balance lookups
  • —Developers who prefer pay-per-request pricing over subscription models
  • —x402-compatible clients on the Base network

Not for

  • —High-volume balance monitoring where $0.02/request adds up quickly
  • —Users who need detailed XRP transaction history or ledger data beyond balances
  • —Anyone without a Base-network USDC wallet to settle payments

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wallet/XRP/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{"address": "rN7...yourXRPaddress"}'

Example

Request

{
  "address": "rN7nMnAbSgPBfRFhMQB1GpJcEq3DTMeHGY"
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wallet/XRP/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request format, response schema, or usage examples. The docs/pricing/README pages are all blank beyond a wallet-connect prompt. Request and response JSON examples are inferred/guessed.

Warnings

  • —No OpenAPI spec or schema documentation available
  • —Request body format is entirely unknown — the example_request_json is speculative
  • —Response format is undocumented; example_response_json set to null
  • —All documentation pages (/docs, /pricing, /README) render only 'Connect wallet' with no content
  • —The platform lists many diverse API categories (AI, analytics, finance, utils) all at $0.02 — actual functionality behind each endpoint is unverified

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:46:40Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/qCrtpt